Question

A body at rest may have

• A. energy
• B. momentum
• C. speed
• D. velocity

Answer 1

The correct option is A

energy

The explanation for the correct option:

A: Energy

1. The types of energy that a body can acquire are potential energy (PE) and kinetic energy.
2. A body can have potential energy if it is at rest.
3. PE depends on the position of the body, not on the motion of the body.
4. A stationary object will have potential energy, but no kinetic energy like a moving object, so a body may have energy at rest.

The explanation for the incorrect options:

B: Momentum

1. Momentum $\left(p\right)$ can be defined as $p=mv$ (where $m$ is mass and $v$ is velocity).
2. The body at rest means $v=0$ then momentum, $p=0$. This means the body at rest does not have momentum.

C: Speed

As there is no distance traveled when the body is at rest therefore the body has zero or no speed.

D: Velocity

As the state of motion is not affected therefore there will be no velocity on the body at rest.

Thus, option A is the correct answer, a body at rest may have energy.